<template lang="">
    <div>
       <h2>我是About的内容</h2> 
    </div>
</template>
<script>
export default {
    name:"About",
    mounted() {
        console.log('About组件重新挂载',this)
    },
    beforeDestroy() {
        console.log('About组件即将被销毁')
    },
}
</script>
<style lang="">
    
</style>